Dear Janis,
I'm a Satz descendant (my mother's mother's parents were a Satz and a Spilkes who were first cousins; they were from Mogilev-Podolsky). I've seen the Datz's, plus Deitz's, Deitch's, Deutches, etc., all of whom seem to be the same family (not sure about Datz). The Deitch etc. names also appear in the ticket order groups that my great-grandfather Joine Spilkes participated in to bring other family members from Mogilev and from Bessarabia (we also had a lot of relatives in Galicia) to Philadelphia. Some of our other close relatives are Treibich, Gass, Broker, and sometimes they are combined in the records (Satz or Shatz-Treibichan, for example). And Gass is sometimes Hass or similar, since the sound is between G and H in Russian. My great-grandfather's also sent his ticket orders via a Roytman family and a Blufstein family.   I have been wondering about you too. Does this sound familiar to you?  Jeanne Swack